Add gyp file to build cpu_features static library.
Add gyp file to build cpu_features static library.

yongjhih/android_tools,yongjhih/android_tools,yongjhih/android_tools,yongjhih/android_tools,yongjhih/android_tools,yongjhih/android_tools,yongjhih/android_tools,yongjhih/android_tools